Bug 929078: Re-enable gaia-ui-tests hidden for webidl bustage.
bug 918143
-check for existing notification with same tag before inserting a new notification on lockscreen.
-add marionette tests for lockscreen notifications.

r=qDot
Bug 929043 - [Contacts] Contacts .remove function used broken due to webidl
Bug 925804 - Update Marketplace for webactivities+e.me. r=fabrice